Ratchet-drill.



N0; 7|5,597. Patented Dec, 9. I902.

J. PETTEBSON.

mncnsr DRILL.

\ [Application filed Sept. 8, 1901.!

(No Model.) 2 Sheets-Sheet I.

THE "ERR l5 PEYZRS (30.. PHOTO-LITHQ. WASHINGTON, D. G

' Patented Dec. 9. I902. Y J. -PETTERSON.

BATGHET DRILL.

Application filed Sept. 8, 1901.)

(No Model.)

2 Sheets-Shoot 2.

z v R i 1 UNITED STATES PATENT OFFICE.

" JOHN PETTERSON, OF STEUBENVILLE, OHIO.

RATCHET DlRlLL.

SPECIFICATION forming part of Letters Patent No. 715,597, dated December9, 1902.

Application filed September 3, 1901. Serial No. 74,222. (No model.)

To all whom itmay concern.-

Be it known that L'JOHN PETTERSON, a citizen of the United States,residing at Steubenville, in the county of J eflerson and State of Ohio,have invented anew and useful Improvement in Ratchet-Drills, of whichimprovement the following is a specification.

This invention relates to certain new and useful improvements inwrenches, and more particularly to double-ratchet wrenches.

This invention has for its object the provision of novel means wherebyawrench may be easilymanipulated and the wrench placed in a lockedposition; furthermore, provide novel means that will automaticallyrelease the same and permit the wrench being turned.

My invention further aims to construct a wrench of the above-describedcharacter that will be extremely simple in construction, strong,durable, comparatively inexpensive 1 to manufacture, and highlyefficient in itsoporation.

With the above and other objects in view the invention consists in thenovel combination and arrangement of parts to be hereinafter more fullydescribed, and specifically pointed out in the claim.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, and whereinlike numerals of reference indicate corresponding parts throughout theseveral views, in which- Figure l is a side elevation of my improvedwrench. Fig. 2 is a front view thereof. Fig. 3 is a verticalsectionalview taken on the line 3 3 of Fig. 2. Fig. 4 is a verticalsectional View taken on the line 4 4 of Fig. 1 looking in the directionof the arrow. Fig. 5 is a side view of the socket to receive the shankof the drill or bit. Fig. 6 is a modification of the same. Fig. 7 is avertical sectional view of the socket. Fig. 8 is a plan view of theballrace. Fig. 9 is a perspective view of the ratchet. Fig. 10 is asimilar view of the locking-arm.

In the drawings the reference-numeral 1 indicates the hollow handle, and2 represents a springpressed plunger slidingly secured therein, saidplunger being encircled by a spiral spring 3, arranged in the seat 4 inthe handle.

The reference-numeral 5 represents the head of the plunger. I Thenumeral 6 represents the ratchet, and 7 indicates a spring-pressed pawl,which is pivoted at 8 in the handle.

' 9 represents a pawl, which is pivoted at 10, said pawls 7 and 9 beingconnected by means of springs 11.

The reference-numeral12 represents alocking-arm carrying a head 14 andan inward extension 15. In said head 14 is secured a spiral spring 16,which tends to normally retain the head outwardly from the handle. Thislocking-arm is secured at 17 to the shaft, the end of the plunger 2engaging the inwardly-extending portion of the locking-arm,

whichwill tend to throw the pawl 26 into engagement with theratchet-wheel 25.

The reference numeral 18 represents a tapered socket which is adapted toreceive the shank of the drill or hit.

The reference-numeral 19 indicates a ballrace, and 20 indicates a seriesof ball-bearings arranged therein, said ballrace being arranged ina'casing 21 of the wrench and a casing 22 of the feed, these parts beingsecured together by means of a threaded bolt 23.

The reference numeral 24 indicates the feed.

About the enlarged inner end of the casing is a ratchet-wheel 25, theteeth of which are engaged by a pawl 26, mounted on and turning with theshaft 17. A stop 27 limits the outward throw of said pawl.

In operation the handle is actuated in the usual way, the pawls 7 and 9,engaging the teeth on the ratchet-wheel 6, causing the drill to berotated when the handle is swung in one direction, said pawls turningidly when the pawl is swung in the opposite direction. When it isdesired to feedthe drill forward, the operator presses down on the head5, which'will cause the spring-actuated rod 2 to be drivenlongitudinally, and as the inner end of the latter comes in contact withthe arm 15 of the lever-12 and bears upon the same with pressure saidlever'will be tilted, and with it the shaft 17, which in turn will throwthe pawl 26 into one of the teeth of the ratchet-wheel 25.

The many advantages obtained by the use parent from the foregoingdescription, taken in connection with the accompanying drawings.

It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit of my invention.

Having fully described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

A ratchet-drill, comprising a drill-head, a ratchet-Wheel mounted on,and rotating with a handle, a set of pawls carried thereby, and inengagement with the teeth of said ratchet, a feed and ratchet wheel 25thereon, a rockshaft 17 mounted in the handle, a springpressedangle-lever 12 mounted on said shaft, a pawl 26, mounted on, and turningwith the shaft 17, a spring-actuated rod 2, adapted to be forcedagainst, and to tilt said lever, and cause said pawl 26 to be throwninto engagement with the teeth of said ratchet-wheel 25, as set forth.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

JOHN PETTERSON. In presence of- JOHN GROETZINGER, M. HUNTER.

